Help with diodes

[vtv]

I want to replace a faulty diode, on a TV chassis 11ak19pro.

On the circuit diagram it is D807 (BA159)

When i see diode BA159 on the net it is completely different in appearance to the original.

The one i have is a Grey plastic block.

I am new and have assumed the "D" in D807 means it is a diode and BA159 is the part required.

My question is can i replace D807 with any BA159?

The markings on the faulty diode are (top) 3n3 j 1600 (side) R76 MKP MD
The manufacturers logo? looks like an A and V merged featured top and side.

Thanks